"Six Powers Secret Art: Dragon Fist!"
Haki was an energy in the Pirate World whose true nature had yet to be understood. It was a latent power buried within every person, something one was born with, yet most people could never develop it in their entire lives. Because they could not grasp the trick to unlocking Haki, only those who had experienced life-and-death trials or possessed exceptional talent were qualified to wield this ability. Yet even with the same Haki, its effects differed drastically from person to person.
Take Observation Haki, for example. Luffy and Roger could hear the Voice of All Things, Dohko could read people's hearts, BIG MOM could see through things, while Katakuri could foresee the future.
If Haki's wonders and inconceivability were to be ranked among the three types of Haki, Conqueror's Haki was undoubtedly the hardest to develop. Many people who possessed Conqueror's Haki did not even know how to use it. Whenever Conqueror's Haki appeared, its greatest achievement was clearing out fodder soldiers and wrecking a few nearby buildings. Then that was it.
Even Four Emperors like Red-Haired Shanks and BIG MOM were no exception, let alone all the other nobodies!
Duke did not know how to develop Conqueror's Haki either. Armament Haki and Observation Haki could be accumulated bit by bit through training, but Conqueror's Haki left him completely clueless. Still, not knowing how to improve it did not mean he could not use it. By borrowing techniques from other worlds and releasing Conqueror's Haki as energy, he could create countless variations.
For example, he could focus Conqueror's Haki at the tip of his fist, compress it to the absolute limit, then release it all at once the instant he threw his punch, forming an ultimate move with immense penetrating power.
It sounded